You are examining a routing table and see a route marked with S*. Which type of route is this?

Although this is a static route, it is a very special static route called a default route or gateway of last resort. The S signifies that it is static and the * signifies that it is the default route. Most all default routes are static, but default routes can also be populated with dynamic routing protocols. The S signifies that the route is a static route; therefore, it cannot be populated with a dynamic routing protocol such as OSPF.